Autostereoscopic Viewpoint Divider Tilt Angle for Moiré Suppression
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Solution Overview
Problem
Current autostereoscopic 3D image display devices face challenges in providing both portrait and landscape modes without requiring multiple viewpoint dividers and often suffer from moiré phenomena, which degrade image quality.
Innovation Solution
The use of a single viewpoint divider with inclined lenticular lenses or parallax barriers, where the tilt angle is optimized based on specific equations involving pixel pitches and viewing distances, allows for both portrait and landscape modes while minimizing moiré effects and enhancing image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single viewpoint divider is used to support both portrait and landscape modes, then device complexity is reduced, but image quality deteriorates due to moiré phenomena
Solution Approach 1:
The patent applies parameter changes by optimizing the tilt angle of the viewpoint dividing units according to a specific mathematical relationship involving pixel pitches and viewing distances. By precisely controlling the tilt angle parameter, the system achieves compatibility with both portrait and landscape modes while suppressing moiré phenomena, thus resolving the contradiction between device simplicity and image quality
Solution Approach 2:
The patent introduces a tilt angle dimension for the viewpoint dividing units, transforming the traditional planar arrangement into an inclined configuration. This dimensional change allows the single viewpoint divider to accommodate different display orientations (portrait and landscape) by directing light at optimized angles, thereby reducing moiré effects while maintaining device simplicity
2Manufacturing precision
If the tilt angle of viewpoint dividing units is optimized for one mode, then image quality is improved for that mode, but adaptability to the other mode deteriorates
Solution Approach 1:
The patent achieves universality by designing a single viewpoint divider with specifically optimized tilt angles that enable the device to function effectively in both portrait and landscape modes. The mathematical relationship between the tilt angle, pixel pitches, and viewing distances ensures that the same hardware configuration delivers high image quality across different orientations, eliminating the need for mode-specific adjustments
3Adaptability or versatility
If multiple viewpoint dividers are used for different modes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal viewpoint divider design that serves multiple functions - supporting both portrait and landscape modes with a single component. By optimizing the tilt angle parameters, the same viewpoint divider achieves high performance in different orientations, eliminating the need for multiple dedicated dividers and thereby reducing device complexity while maintaining full adaptability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables a single autostereoscopic 3D image display device to effectively provide high-quality 3D images in both portrait and landscape orientations by suppressing moiré patterns and improving overall image quality through precise pitch configurations and tilt angles.
Implementation Method 1
a viewpoint divider that includes a plurality of viewpoint dividing units that are inclined at a tilt angle
Implementation Method 2
an autostereoscopic 3D image display device that does not require the use of glasses uses an optical system such as a lenticular lens, a parallax barrier, etc., disposed in the display device
Data Source
AI summary
A three-dimensional image display device includes a display panel that includes a plurality of pixels arranged in a matrix shape; and a viewpoint divider that includes a plurality of viewpoint dividing units that are inclined at a tilt angle. Letting a row-directional pitch and a column-directional pitch of the pixels be respectively denoted as Hp and Vp, where Hp>Vp, the tilt angle satisfies the following equation:A=tan-1b*Hp(3b+c)*Vp,where c is −1 or 1, and b is a natural number that is greater than 1.